**Scotland international Adam Hastings was sent off as Glasgow Warriors lost 40-21 at reigning Guinness PRO14 champions Leinster.** Catching a high ball in the 37th minute, an airborne Hastings raised his lead leg and his boot made contact with Cian Kelleher’s face. Referee Frank Murphy produced his red card following the TMO review. By that time the hosts were already 21-7 up after converted scores from Harry Byrne and Scott Penny, as well as a penalty try after Cole Forbes was sin-binned for a tackle in the air.